expected: Compute Expected Numbers of Disease

Description

Compute the internally indirect standardized expected numbers of disease.

Usage

expected(population, cases, n.strata)

Arguments

population

a vector of population counts for each strata in each area

cases

a vector of the corresponding number of cases

n.strata

number of strata considered

Value

expected.casesa vector of the expected numbers of disease for each area

Details

The population and cases vectors must be balanced: all counts are sorted by area first, and then within each area the counts for all strata are listed (even if 0 count) in the same order.

References

Elliot, P. et al. (2000) Spatial Epidemiology: Methods and Applications. Oxford Medical Publications.

Examples

Run this code

data(pennLC)
population <- pennLC$data$population
cases <- pennLC$data$cases

## In each county in Pennsylvania, there are 2 races, gender and 4 age bands considered = 
## 16 strata levels
pennLC$data[1:16,]
expected(population,cases,16)

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